Coenvelope
上包络
🗣️ 情景例句
He's a friend.
他是位朋友。
Can I cancel this ticket?
我可以取消这张票吗？
So what should you do? We'll assume that you have sorted out the basics --
那么你该怎么做呢？我们假定你已把基本情况弄清楚了，